this as new details emerged thursday about frederick humphries ii, the tampa fbi agent who triggered the investigation that led to petraeus' resignation. humphries is a 16-year veteran who played a major royal in feeling ahmed raceiam's millennial plot to blow up l.a.x. and he's currently an fbi liaison officer and humphries got to know jill kelley in tampa, say people close to kelley, and she turned to him when she and general john allen first received anonymous e-mails last spring that they found alarming. thursday, humphries helped explain that shirtless picture he had sent kelley telling the "seattle times" it was a joke. posing with target dummies after s.w.a.t. practice. it was humphries who apparently worried about a cover-up told republican congressman dave reichert, an old friend about the petraeus investigation. reichert alerted majority leader eric cantor, almost two weeks before the president was officially notified. >> the information that was sent to me sounded as if there was a potential for a national security vulnerability. >> reporter: attorney general eric holder w